Adjustable window-scaffold.



VAN DYKE BURHANS.

ADJUSTABLE WINDOW SCAFFOLD.

APPLlCATION FILED NOV. 25. 1914.

1,1? 508. I Patented 001. 19, 1915.

2 SHEETS-SHEET I.

VAN DYKE BURHANS.

ADJUSTABLE WINDOW SCAFFOLD.

APPLICATION HLED NOV.25. 1914.

van DYKF; :enanans, or new YonK, N. Y.

ADJUSTABLE WINDOW-SCAEFOLD.

Specification of Letters Patent.

Patented Oct. 19, 1915.

Application filed November 25, 1914. Serial No. 874,044.

of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

This inventionv relates to adjustable window scaffolds, and one of theprincipal objects of the invention is to provide an improved means forsupporting the scafiold.

at the opposite sides of the window frame, and to provide means wherebythe scaffold may be quickly connected to the supporting means wheneverdesired for use and can be readily removed for packing in a small spacewhen not required.

Another object of the invention is to provide simple, reliable andeflicient means for supporting a window scafiold for cleaning windows,in which improved means are provided for supporting the scafi'old andseat so that it can be readily disconnected from the permanent supportat the opposite sides of the window, and can also be adjusted forwindows of different widths'whenever required.

The foregoing and other objects may be attained by means of theconstruction illustrated in the accompanying drawings, in

which- Figure 1 is a horizontal sectional view of a window casing orframe and showing the improved scaffold in plan, Fig. 2 is a verticalsection of portions of a window frame and showing the scaffold and backrest in elevation, Fig. 3 is a detail perspective view made on a largerscale of the supporting members of the scaffold, Fig. 1- is a detail 1elevation showing one of the supporting members and angular end of oneof the adjustable rods connected thereto, Fig. is a detail perspectiveview of the adjusting rods, and the disk connection for said rod, andFig. 6 is a perspective view of the bracket or support for the backrest.

Referring to the drawings, the'numeral 1 designates a support madepreferably of sheet metal and bent into the form of the letter U. Thesupports 1 are connected to the opposite sides of the window frame inthe lower portion of the sash groove of the upper sash, and saidsupports are provided with outwardly turned feet 2 provided with boltholes 3. These supports may be permanently secured to the window frameif desired, but as shown in Figs. 1 and 2, the bolts 4 are provided withpivoted latches 5 disposed in the groove or recess 6 in the windowframe, thus rendering the supporting members 1 removable wheneverdesired.

The supporting members 1 are each. provided with a rectangular alinedopening in the two horizontal members a and b to receive an L-shapedbracket 7, one arm of which extends through. the apertures in themembers a and b, and the other extends horizontally inward toward theopposite side of the window frame. Connected to the horizontal arm 7 isa bracket consisting of a portion 8 connected by rivets 9 to the end ofthe arm 7 and provided with a vertical member 10, a horizontal member11, bent downward as at 12 and providing a horizontal member 13 and avertical terminal portion 15. The two horizontal portions 8 and 11 areprovided with alined apertures or perforations 16 to receive the angularends 17 of the adjustable rods or bars 18, said rods having angular ends19. The clownwardly extending terminal ends 17 of the rods or bars 18are each provided with a notch 20 to engage the wall ofthe slot 16 inthe member 11 of the support, to thus render the device reliable andprevent disconnection of the parts when in use.

The inner ends of each of the members 18 are squared as shown at 21 inFig. 5, and extended through a disk 22, said squared portion being heldin connection with the disk by means of a cotter pin 23. The disk 22 isprovided with a perforation through which the companion member 18passes, thus permitting the two members 18 to be adjusted one relativelyto the other in the center so that the scaffold may be secured towindows of difierent width, as will be obvious.

Mounted upon the parallel portions 2d of the members 18, is a back restsupport comprising a plate 25 provided with screw holes 26 therein andoppositely bent spaced arms 27 provided with apertures 28 through whichthe parallel members 24; extend. A back rest 29 is secured to the faceof the bracket by means of rivets 30.

It will be understood that the parts thus far described are duplicatedon the opposite side of the Window frame.

From the foregoing it will be obvious that these scaffolds may bereadily removed from the supports 1 and can be packed Within a smallspace whennot required for uses The members 1 may be permanently securedto the Window frame, or may be connected by the removable bolts shown inFigs. 1 and 2.

Various changes may be'made in the details of construction withoutdeparting from the spirit and scope of the invention as defined in theclaims.

\Vhat is-claimed is a 1. A window cleaning scaffold comprising U-shaped'supporting devices to be connected.

at opposite sides of the Window frame, L- shaped brackets removab'lyconnected to said supporting members, a socket member provided withalined apertures, and adjustable rods having ends seated in saidapertures and each provided with a notch to lock it in Copies of thispatent may be obtained for in said apertures, said rods each having asquared end, and a disk through which said ends project, said disk alsobeing provided with a circular aperture through which the companionmember extends to permit adjustment, and a back rest supported on theparallel portions of said rod.

- In testimony whereof I atlix my signature in presence of twowitnesses.

VAN DYKE BURHANS.

Witnesses:

EDWARD M. COLEMAN, J12, ANTON SCHNEIDER.

five cents each. by addressing the Commissioner of latents, Washington,D. C.

